US 2013/0176385 A1 Example 4 — Canon / Hiroshi Saruwatari
| 11 elements / 10 groups |
| Patent f = 15.57-58.93 mm |
| Marketed 15.1-60.4 mm |
| f/2.8-5.8 marketed; patent Fno 2.88-5.94 |
| 5 aspherical surfaces |
Rear focus by the fourth lens unit. The patent gives infinity-focus zoom gaps only; close-focus gap pairs are not inferred.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-TIH53 (OHARA) |
| L2 | Biconvex Positive | S-LAL14 (OHARA) |
| L3 | Positive Meniscus | S-LAH66 (OHARA) |
| L4 | Neg. Meniscus (2× Asph) | M-TAFD305 (HOYA) |
| L5 | Biconcave Negative | S-LAH66 (OHARA) |
| L6 | Positive Meniscus | S-NPH2 (OHARA) |
| L7 | Pos. Meniscus (2× Asph) | M-TAFD305 class (HOYA, inferred; stored nd=1.84954) |
| L8 | Positive Meniscus | S-LAH66 (OHARA) |
| L9 | Negative Meniscus | S-TIH6 (OHARA) |
| L10 | Positive Meniscus | S-FSL5 (OHARA) |
| L11 | Biconvex Positive (1× Asph) | S-BAL42 (OHARA) |
Detailed analysis available in the interactive viewer above.